As operational digital and analogue frequencies keep increasing, low ESL (Equivalent Series Inductance) and ESR (Equivalent Series Resistance) values are required to ensure the proper performance of DSPs which may have signal speeds of up to 300 MHz and above. Changes to the structure of Multilayer Ceramic Capacitors have lead to significant reductions of both ESL and ESR which have enabled Surface Mount EMI Filters to achieve insertion loss performance levels similar to those of panel mounted devices.